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EP0884886A3 - Echo canceler employing multiple step gains - Google Patents

Echo canceler employing multiple step gains Download PDF

Info

Publication number
EP0884886A3
EP0884886A3 EP98107970A EP98107970A EP0884886A3 EP 0884886 A3 EP0884886 A3 EP 0884886A3 EP 98107970 A EP98107970 A EP 98107970A EP 98107970 A EP98107970 A EP 98107970A EP 0884886 A3 EP0884886 A3 EP 0884886A3
Authority
EP
European Patent Office
Prior art keywords
step gains
echo canceler
multiple step
employing multiple
segments
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP98107970A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0884886A2 (en
Inventor
Masashi Takada
Yoshihiro Ariyama
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Oki Electric Industry Co Ltd
Original Assignee
Oki Electric Industry Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Oki Electric Industry Co Ltd filed Critical Oki Electric Industry Co Ltd
Publication of EP0884886A2 publication Critical patent/EP0884886A2/en
Publication of EP0884886A3 publication Critical patent/EP0884886A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M9/00—Arrangements for interconnection not involving centralised switching
    • H04M9/08—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic
    • H04M9/082—Two-way loud-speaking telephone systems with means for conditioning the signal, e.g. for suppressing echoes for one or both directions of traffic using echo cancellers

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Telephone Function (AREA)
  • Soundproofing, Sound Blocking, And Sound Damping (AREA)
EP98107970A 1997-06-11 1998-04-30 Echo canceler employing multiple step gains Withdrawn EP0884886A3 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP153428/97 1997-06-11
JP15342897A JP3361724B2 (ja) 1997-06-11 1997-06-11 エコーキャンセラ装置
JP15342897 1997-06-11

Publications (2)

Publication Number Publication Date
EP0884886A2 EP0884886A2 (en) 1998-12-16
EP0884886A3 true EP0884886A3 (en) 1999-08-04

Family

ID=15562307

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98107970A Withdrawn EP0884886A3 (en) 1997-06-11 1998-04-30 Echo canceler employing multiple step gains

Country Status (5)

Country Link
US (2) US6236725B1 (ja)
EP (1) EP0884886A3 (ja)
JP (1) JP3361724B2 (ja)
KR (1) KR19990006701A (ja)
CN (1) CN1223108C (ja)

Families Citing this family (42)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL121555A (en) 1997-08-14 2008-07-08 Silentium Ltd Active acoustic noise reduction system
US7853024B2 (en) * 1997-08-14 2010-12-14 Silentium Ltd. Active noise control system and method
JP2000040985A (ja) * 1998-07-22 2000-02-08 Oki Electric Ind Co Ltd エコーキャンセラ
JP3211884B2 (ja) * 1998-08-14 2001-09-25 日本電気株式会社 音響エコーキャンセラ
JP3241328B2 (ja) * 1998-09-30 2001-12-25 沖電気工業株式会社 エコーキャンセラ
JP3385221B2 (ja) * 1998-11-16 2003-03-10 沖電気工業株式会社 エコーキャンセラ
US6678254B1 (en) * 1999-05-03 2004-01-13 Nortel Networks Limited Method and communication device for optimizing echo cancellation
DE19935808A1 (de) 1999-07-29 2001-02-08 Ericsson Telefon Ab L M Echounterdrückungseinrichtung zum Unterdrücken von Echos in einer Sender/Empfänger-Einheit
US6570986B1 (en) * 1999-08-30 2003-05-27 Industrial Technology Research Institute Double-talk detector
KR100500810B1 (ko) 1999-10-29 2005-07-12 마츠시타 덴끼 산교 가부시키가이샤 파형 등화 제어 장치
WO2001056184A1 (en) * 2000-01-25 2001-08-02 Aware, Inc. System and method for the application of an lms method to updating an echo canceller in an adsl modem
US6471413B1 (en) * 2000-03-17 2002-10-29 Lucent Technologies Inc. Method and apparatus for protecting fiber optic connectors
DE10030926A1 (de) * 2000-06-24 2002-01-03 Alcatel Sa Störsignalabhängige adaptive Echounterdrückung
CA2415363C (en) * 2000-07-11 2006-01-24 Samsung Electronics Co., Ltd. Repetitive-pn1023-sequence echo-cancellation reference signal for single-carrier digital television broadcast systems
JP4345225B2 (ja) * 2000-11-27 2009-10-14 沖電気工業株式会社 エコーキャンセラ
JP4310926B2 (ja) 2001-02-26 2009-08-12 沖電気工業株式会社 エコーキャンセラ装置
US20020181699A1 (en) * 2001-03-23 2002-12-05 Tien Pham System for convolutional echo cancellation by iterative autocorrelation
US7333605B1 (en) * 2002-04-27 2008-02-19 Fortemedia, Inc. Acoustic echo cancellation with adaptive step size and stability control
DE60226611D1 (de) * 2002-10-21 2008-06-26 Silentium Ltd Aktivsystem zur Reduktion des akustischen Rauschens
US7260209B2 (en) * 2003-03-27 2007-08-21 Tellabs Operations, Inc. Methods and apparatus for improving voice quality in an environment with noise
GB2416971A (en) * 2004-08-04 2006-02-08 Mitel Networks Corp Calculating an expected echo return loss enhancement (erle) in an echo canceller
US7433463B2 (en) * 2004-08-10 2008-10-07 Clarity Technologies, Inc. Echo cancellation and noise reduction method
JP4622399B2 (ja) * 2004-09-07 2011-02-02 沖電気工業株式会社 エコーキャンセラ付き通信端末及びそのエコーキャンセル方法
JP4297055B2 (ja) 2005-01-12 2009-07-15 ヤマハ株式会社 カラオケ装置
US7426270B2 (en) * 2005-08-10 2008-09-16 Clarity Technologies, Inc. Method and system for clear signal capture
JP4752494B2 (ja) * 2005-12-22 2011-08-17 沖電気工業株式会社 エコーキャンセラ
US9058819B2 (en) * 2006-11-24 2015-06-16 Blackberry Limited System and method for reducing uplink noise
US8855329B2 (en) 2007-01-22 2014-10-07 Silentium Ltd. Quiet fan incorporating active noise control (ANC)
JP4509126B2 (ja) * 2007-01-24 2010-07-21 沖電気工業株式会社 エコーキャンセラ及びエコーキャンセル方法
US7809129B2 (en) * 2007-08-31 2010-10-05 Motorola, Inc. Acoustic echo cancellation based on noise environment
WO2009047858A1 (ja) * 2007-10-12 2009-04-16 Fujitsu Limited エコー抑圧システム、エコー抑圧方法、エコー抑圧プログラム、エコー抑圧装置、音出力装置、オーディオシステム、ナビゲーションシステム及び移動体
CN101262530B (zh) * 2008-04-29 2011-12-07 中兴通讯股份有限公司 一种消除移动终端回音的装置
JP4889810B2 (ja) * 2008-06-11 2012-03-07 三菱電機株式会社 エコーキャンセラ
US9431001B2 (en) 2011-05-11 2016-08-30 Silentium Ltd. Device, system and method of noise control
US9928824B2 (en) 2011-05-11 2018-03-27 Silentium Ltd. Apparatus, system and method of controlling noise within a noise-controlled volume
CN103814584B (zh) 2011-10-14 2017-02-15 富士通株式会社 声音处理装置和声音处理方法
GB2515592B (en) 2013-12-23 2016-11-30 Imagination Tech Ltd Echo path change detector
CN106068535B (zh) * 2014-03-17 2019-11-05 皇家飞利浦有限公司 噪声抑制
KR20170032603A (ko) 2015-09-15 2017-03-23 삼성전자주식회사 전자 장치, 그의 반향 신호 제거 방법 및 비일시적 컴퓨터 판독가능 기록매체
CN105261363A (zh) * 2015-09-18 2016-01-20 深圳前海达闼科技有限公司 一种语音识别的方法、装置及终端
JP6821126B2 (ja) * 2017-05-19 2021-01-27 株式会社Ｊｖｃケンウッド ノイズ除去装置、ノイズ除去方法およびノイズ除去プログラム
US11741926B2 (en) 2021-06-15 2023-08-29 Ford Global Technologies, Llc Echo cancelation

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628529A (en) * 1985-07-01 1986-12-09 Motorola, Inc. Noise suppression system
US5455819A (en) * 1993-03-05 1995-10-03 Nec Corporation Method and apparatus capable of quickly identifying an unknown system even on occurrence of a plurality of dispersive portions
EP0710947A1 (fr) * 1994-10-28 1996-05-08 Alcatel Mobile Phones Procédé et dispositif de suppression de bruit dans un signal de parole, et système avec annulation d'écho correspondant

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1186764A (en) * 1982-06-23 1985-05-07 Akira Kanemasa Echo canceler
US5267322A (en) * 1991-12-13 1993-11-30 Digital Sound Corporation Digital automatic gain control with lookahead, adaptive noise floor sensing, and decay boost initialization
FI92535C (fi) * 1992-02-14 1994-11-25 Nokia Mobile Phones Ltd Kohinan vaimennusjärjestelmä puhesignaaleille
JPH07202998A (ja) * 1993-12-29 1995-08-04 Nec Corp 周囲ノイズ除去機能を備えた電話機
DE4430189A1 (de) * 1994-08-25 1996-02-29 Sel Alcatel Ag Verfahren zur adaptiven Echokompensation
US5727072A (en) * 1995-02-24 1998-03-10 Nynex Science & Technology Use of noise segmentation for noise cancellation
US5764753A (en) * 1995-09-29 1998-06-09 Crystal Semiconductor Corp. Half-duplex controller
US5937060A (en) * 1996-02-09 1999-08-10 Texas Instruments Incorporated Residual echo suppression
JP3139405B2 (ja) * 1997-02-28 2001-02-26 日本電気株式会社 エコーキャンセラ

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4628529A (en) * 1985-07-01 1986-12-09 Motorola, Inc. Noise suppression system
US5455819A (en) * 1993-03-05 1995-10-03 Nec Corporation Method and apparatus capable of quickly identifying an unknown system even on occurrence of a plurality of dispersive portions
EP0710947A1 (fr) * 1994-10-28 1996-05-08 Alcatel Mobile Phones Procédé et dispositif de suppression de bruit dans un signal de parole, et système avec annulation d'écho correspondant

Also Published As

Publication number Publication date
US6351532B1 (en) 2002-02-26
JP3361724B2 (ja) 2003-01-07
EP0884886A2 (en) 1998-12-16
CN1223108C (zh) 2005-10-12
CN1202051A (zh) 1998-12-16
US6236725B1 (en) 2001-05-22
KR19990006701A (ko) 1999-01-25
JPH114288A (ja) 1999-01-06

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